Green’s Dictionary of Slang

tummler n.

also tumler
[Yid./Ger. Tummel, disorder; orig. in show business use, tummler, the MC of a (Jewish) hotel in Catskill Mts, NY]

(US) the ‘life and soul of the party’, a person who talks a great deal but accomplishes little.

Show quotations
[US]A.J. Liebling Back Where I Came From (1990) 91: He’s a real tummler, that Hymie. He knows to get a dollar.
[US]L. Bruce Essential Lenny Bruce 258: Shut up. Just do me a favor, don’t. No tumler, alright?